Thunderstorm Wind, Yankton
- When
- July 27, 8:25 AM CST to 9:00 AM CST
- Where
- Yankton County, Lesterville to 9 mi of Gayville
- Measured
- 57 kt (66 mph)
- Property damage
- $200,000
- Crop damage
- $100,000
- Coordinates
- 43.170, -97.600
Thunderstorm winds caused widespread tree and power line damage in Yankton County. The winds also tore the roof off a building and damaged a grain elevator at Utica.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS FSD wrote it up.
Thunderstorm winds caused widespread tree and power line damage in Yankton County. The winds also tore the roof off a building and damaged a grain elevator at Utica.
The Sioux Falls radar (KFSD), 84 km away, was scanning. The volume nearest the first event began at 14:27 UTC.
1 thunderstorm wind. Local standard time, as filed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in South Dakota in 1997Every state in 1997This day in weather historyWarnings in South Dakota, July 1997
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 5611416.